procedure TForm1.Button1Click(Sender: TObject);
Var
List : TStrings;
P : PChar;
A : Array of Char;
FS : TFileStream;
begin
FS := TFileStream.Create('E:/1.txt',fmOpenRead);
try
FS.Position := 0;
SetLength(A,FS.Size);
P := PChar(A);
FS.Read(P^,FS.Size);
ShowMessage(A[1]);
Finally
FS.Free;
end;
end;